. >> 20 first graders and six staff members were killed at the sandy hook elementary school in newtown. the president said he was skeptical about an nra proposal to put an armed guard in every school. >>> former president george h.w. bush remains in a houston hospital this morning, but mr. bush was moved back to a regular room on saturday out of the intensive care unit. he spent a week there being treated for a persistent fever. a spokesman says he continues to improve. >>> federal officials are investigating a tour bus accident that killed at least nine people. the bus driver apparently lost control yesterday. the bus swerved, hit the guardrail, flipped, falling down a steep embankment. the bus driver survived. more than 20 were injured. the bus was headed from las vegas to vancouver. >>> they're investigating flight recorders of a russian jet trying to land in moscow. the only people onboard saturday's crew, five were killed. barry petersen reports. >> reporter: the footage from a passing driver shows debris exploding across the moscow highway as a township jet flight 204 slammed int